Type-writing machine.



A. G. F. KUROWSKI.

TYPE WRITING MACHINE.

APPLICATION FILED AUG-9. 1M3.

1,251,054. Patented Dec. 25,1917.

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' INVENTOR 904mm A. e. F. KUROWSKI.

TYPE WRITING MACHINE.

APPLICATION FILED AUG-9,1913.

1,251,054. Patented Dec. 25,1917.

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WITNESSES 0g A ORNEY A. G. F. KUROWSKI.

TYPE WRITING MACHINE.

APPLICATION FILED AUG-9, 1913. 1,251,054. Patented Dec. 25,1917.

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UNITED STATES PATENT OFFICE.

ALFRED G. F. KUROWSKI, OF BROOKLYN, NEW YORK, ASSIGNOR TO UNDERWOODTYPEWRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Application filed August 9, 1913. Serial No. 783,860.

To all whom it may concern.-

Be it known that I, ROWSKI, a citizen of the United States, residing inBrooklyn borough, city of New York,-in the county of Kings and State ofNew York, have invented certain new and useful Improvements inType-Writing Machines, of which the following is a specification. v Myinvention relates to tabulating mechanism adapted for use withtypewritlng ma-' chines, and'more particularly to mechanism in which anumber of sets of tabulator stops are provided, and in which the severalsets may be selectively brought into operative position and theindividual stops in each set selectively projected to cooperate withcounter stops.

It is customary to provide a single setof column stops, mounted on thecarriage, to be selectively projected into position to engage counterstops on the machine frame,

and thereby stop the carriage at column pok sitlons corresponding to theprojected stopsu With such an arrangement, the projected stops must bereturned to inoperative position and a different selection of stopsprojected .each time the form of work-sheet or the character of the workis changed.

A feature of the present invention is the provision of a plurality ofsets of stops, each set adapted to be brought into cooperative relationwith the counter stops, and the individual'stops of each set adapted tobe selectively brought into operative position, whereby each set ofstops may have a different selection of stops set for a different formof work-sheet, or a different character of work, thusavoiding thenecessity of pro jecting a new selection of resetting stops each timethe form of work is changed.

In one form of the invention, each set of column stops is mounted in arack bar supported on and extending longitudinally of the carriage,several rack bars being mounted for rotation about a common axis,whereby any set of stops may be brought into position to coiiperate withcounter stops on the machine frame. The counterstops may comprise aseries of decimal stops 1n the form of vertical key-actuated bars, eachALFRED G. F. KU- A .of a rack bar and movable into the path of aprojected column stop, and each operable to release the carriage fromits escapement mechanism and permit it to move forward to a positiondetermined by the projected stop. The column stops may be selectivelypro ected into the path of the counter stops by means of a key operatingthrough intermediate mechanism to project any stop that is brought intoa predetermined position by the travel of the carnage.

The key for projecting the column-stops is also utilized for returningthem to inoperative position. To-this end the key has a limited range ofmovement for setting the stops, and operates during such movement toswing a pawl into position to engage and project a stop,'the'movement'ofthe key being limited by a pivoted latch. The key maythus be operatedrepeatedly to project any deslred stops corresponding to the positionsof the carriage when the key is operated To return the stops of a set,said latch is retracted to permit the further depression of thestop-setting key, which thereby releases the stop-setting pawl and atthe same time lifts a cam into' the path of the projected stops,whereby-the travel of the carriage will return thevstops to inoperativeposition.

The several stop-carrying racks may be connected to rotate as a unitabout an axis parallelwith the platen, and'may be held with any desiredset of stops in operative osition by means of a sprmg detent engagmg therack-carrying members.

Other features and advantages will here: inafter appear.

In the accompanying drawings,

Figure l'is a sectional elevation view of an Underwood typewritingmachine having tabulating mechanism constructed in accord-.

ance with the principles of my invention.

Fig. 2 is a fragmentary view'of a portion stops carried thereby.

Fig. 3 is a perspective view showing particularly the stop-setting andreturning mechanism. j

Fig. 4 is a part' sectional elevation View of the same, but with thestop-setting key moved into position to project a stop.

Fig. 5 is a similar view of a portion of the mechanism shown in Fig. 4,after the stop-setting key has been fully depressed to release thestopprojecting pawl and lift the stop-returning cam into operativeposition.

Fig. 6 is a fragmentary elevation view of the stop-setting andstop-returning mechanism, the position of parts corresponding to Fig. 5.i

Key levers l fulcrumed on a rod 2 are connected to bell cranks 3 toactuate upwardly and forwardly striking type-bars 4 to move the types 5into position to print against the front face of a rotary platen 6. Theplaten is mounted in a traveling carriage 7 running on a rear guide rail8 and a front guide rail, not shown, the carriage being driven by aspring motor 9, and its movement controlled by an escapement mechanismcomprising an escapement wheel 10 and cooperating pawls 11. An escapement pinion 12 rotating-with the pinion 10 is in mesh with a rack bar 13which may be carried by arms 14 pivoted at 15 to the carriage, the rackbar-being releasable from the pinion 12 by a hand lever 16.

Each type-bar has a heel 17 to strike a universal bar 18 operativelyconnected to the escapement pawls, whereby the latter are operated, andpermit the carriage to move forward a letter-space distance each timethe type-bar is actuated- The column stops 19 are arranged in sets, eachset being mounted in a rack bar or supporting memberv 20 formed with aseriesof transverse openings 21 in which the stops 19 are slidable intoand out of operative position. The stops are yieldably held in either ofsaid positions by spring detents 22, each of which is adapted to engageeither an innor notch 23 to hold the stop in retracted or inoperativeposition, or an outer notch 24 to hold the stop in projected position.The notches are preferably V-shaped and act as cams so that the springpressure of the detents assists inmoving the stops to either position ofadjustment. The spring detents 22 are preferably arranged alternatelyvon opposite sides of the stops, thereby providing more room for thedetents and providing a better mechanical construction. A rod 25 mayextend through elongated openings 26 in the sto s to prevent the lat-.ter from becoming accidentally displaced or withdrawn from the bar, atthe same time permitting adjustment of the stops. Each stop 19 projectslaterally beyond the edge of its rack bar, and has an upwardextension 27adapted to be brought into the path of a pawl for projecting the stops.A cover; plate 35 on each rack bar extends downwardl over the sides ofthe rack bar and covers the openings containing the spring detents,thereby preventing displacement of the detents and their springs.

secured to a shaft 29 journaled in brackets 30 and 31 secured to bracketarms 32 and 33'at the ends of the carriage.

- It will be noted that the inner faces of the rack bars or the coverplates 35 thereon meet along their edges to form a square passage orcompartment 34 through which the shaft 29 extends, and of sufiicientsize to accommodate the inwardly projecting ends of the stops. Saidcompartment being entirely closed, serves to protect the stops and theirspring detents from dust and dirt.

A hand wheel 36 on the end of the shaft 29 serves to rotate said shaftand with it the stop-carrying bars 20, all of which are symmetricallydisposed around the shaft and rotate with it as a unit to'selectivelybring the several sets of stops into a position directly over a set ofcounter stops 37 movable into the path of the projected column stops 19.

The counter stops 37 are in the form of vertically-disposed bars orplungers mountedfor vertical movement in a frame 38 fixed to the machineframe. These counter stops 37 which may comprise a series of decimaltabulator stops, are actuated by levers 39 mounted on a pivotrod 40 andprovided at their forward ends with tabulator keys 41. Each counter stop37 is formed with a ledge 42 on which bears a universal bar 43 connectedto a rock shaft 44 having an arm 45 connected through a link 46 to alever 47 pivoted at 48 and provided at its forward end with a roller 49beneath the rack bar 13, whereby when a tabulator key ,41 is depressedto project a counter stop 37, the rack 13 is lifted and releasesthecarriage from the escapement mechanism, permitting the carriage torun forward until arrested by a projected column stop striking theprojected counter stop.

The column stops are selectively set or projected'to operative positionby the following mechanism: A stop-setting key 50 on a lever 51fulcrumed on the rod 2 is connected through a link 52 to a rock arm 53on a rock shaft 54 on which is a second rock arm 55, connected through alink 56 to a lever 57- pivoted at 58, said lever at its 0pposite endbeing pivotally connected to an actuator 59 in the form of a verticallymovable bar. The bar 59 is formed with an opening 60 through whichextends a' guiding rod 61, onthe frame 38, said rod serving to limit thethrow of the actuator 59 and also to guide it during its verticalmovement. Adjacent the upper end of the actuator 59 is a stop-settingpawl 62 pivoted at 63 to a bracket 64 and normally held in its verticalor retracted position,- as shown in Fig. 1, by a spring 65. The pawl 62is operated by a pin 66 on the upper end of the actuator 59, said pinnormally engaging beneath a heel 67 of the pawl, as shown in Fig. 1.

When the stop-setting key 50 is depressed, it operates through the parts51 to 57, to lift the actuator 59 to an intermediate position, as shownin Fig. 4, thereby swinging the pawl 62 to/ a substantially horizontalposition, the outer end or toe of the pawl during such movement engagingwhichever stop 19 lies in its path, and thus projecting said stop, asshown in Fig. 4. When the stop-setting key 50 is released, it isreturned to normal position by a spring 68, and the several partsoperated by the key, up to and including the pawl 62, are restored toinitial position. The carriage may then be moved to a new position andthe key 50 again actuated to project another column stop. In this wayany desired stops in a set may be projected to operative position.

The stops having been thus set for any particular form of work sheet, orfor any particular character of work to be done, the tabulator mechanismis used in the'usual manner. That is, assuming the work-sheet to be inposition on the machine, and it is desired to bring the carriage intoposition for printing in the first or lefthand column for which a stopis set, a decimal tabulator key 41 is depressed, thereby bringing theprinting point on the carriage to said column and to the particulardecimal position in the column corresponding to the depressed decimalkey. In like manner, by repeatedly operating the decimal tabulator keys,the carriage is brought successively to the several columnar positionsfor which the stops are set.

If it is desired to temporarily employ a new set of column stops withoutinterfering with the set that has been in use, so that the latter mayagain be used without the necessity of resetting its individual stops,asec- 0nd rack bar 20 is brought over the counter stops by rotating thehand wheel 36. The second rack bar having thus been brought intooperative position, the stops thereon are selectively projected in themanner heretofore described, the stops being selected in accordance withthe form of work-sheet or the character of work in hand. Each set ofstops may thus comprise a selection of individual stops independentlyset for a difierent form of work, and said stops may remain setindefinitely, and may be brought into operative position at any time bymerely rotating the hand wheel 36 to bring them over the counter stops.

The rack bars 20 are held in adjusted position by means of a springdetent comprising an arm 69 pivoted at 70 to a bracket arm 71 which maybe a continuation of the bracket 31, said arm 69 carrying at'it s freeend a detent roller 72 held by a spring 73 against the plate 28, thelatter being provided with cam recesses 74 in which the roller 72 seatsto hold the racks in adjusted position.

When it is desired to retract the projected stops of any set, theactuator 59 is projected to its extreme upward position, as shown inFig. 5, to actuate a resetting cam '75. To permit this operation of theactuator 59, a latch 76 pivoted at 77 and having a hook or projection78-, normally held by a spring 79 in the path of the lever 51, iswithdrawn by depressing a finger-piece 80 on the latch so that thestop-setting key 50 may be depressed a sufficient distance to "fullyproject the actuator 59. The initial upward movement of the member 59,of course, swings the pawl 62 inward to the Fig. 4 position, as alreadydescribed, but the continued movement of the actuator carries the pin 66beyond the pawl, allowing the latter to snap back to the Fig. 5 positionwhere it cannot interfere with the stops 19. During-this final movementof the actuator 59, a lug 81 thereon strikes the cam 7 5 which, asshown, is in the form of a lever pivoted at 83 to the frame 38 andhaving its upper surface inclined or cam-shaped, so that when thuslifted to the Fig. 6 position, it lies in the path of the projectedstops 19 whereby during the travel of the carriage (usually its returnmovement). said stops ,are carried along the cam and.forced inward andsnapped to their retracted or inoperative position. A returning spring82 is connected to the lever 75.

During the upward movement of the actuator 59, the front wall of theopening 60 bears against the rod 61, being held in such position by aleaf spring 84, thereby guidmg the actuator and holding it up to thepawl 69;, so asto insure the actuation of the latter, the spring 65being weaker than the spring 84 to insure the movement of the pawl tothe Fig. 4 position, the spring 84, however, permitting the actuator toyield in a forward direction sufficiently to slip past the pawl whenmoved to the Fig, 5 position.

It will be noted by reference to Fig. 4 that when a stop 19 is projectedit is moved downwardly a short distance out of contact with the pawlowing to the spring detent 22 engaging the V-shaped notch 24 in the stopand camming the stop downwardly. As a result, the pawl 62 is permitted aslight additional downward movement about 'its pivot as the actuatormoves upwardly from the Fig. 4 position toward the Fig. 5 pos tion,thereby allowing the pin 66 to slip past the pawl without suflicientpressure on said pin to move the actuator away from the rod 61. Thisresults in a smoother and easier action of the stop-setting key 50.

Variations may be resorted to Within the scope of the invention, andportions of the improvements may be used-without others.

Having thus described my invention, I claim:

1. In a tabulatin mechanism for a type- Writing machine, t e combinationwith a carriage, of a plurality of sets of stops for controlling saidcarriage, a counterstop, said sets of stops being selectively movable tooperative or inoperative position with respect to said counterstop, eachstop also being individually projectable, and key operated means forselectively projecting any individual stop ofifiany set when said set isin cooperative relation with the counterstop.

2. In a tabulating mechanism for a type- Writing machine, thecombination with a carriage, of a plurality of sets of stops forcontrolling said carriage, a counterstop, said sets of stops beingselectively movable to operative or inoperativeposition with respect tosaid counterstop, each stop being also individually projectable, andkeyoperated means for selectively projecting anv individual stop of anyset when said set is in cooperative relation with the counterstop, saidkey-operated means normally in position to permit free adjustment of anyset of stops from operative to inoperative position with respect to thec ounterstop.

3. In a tabulating mechanism for a type writing machine, the combinationwith a carriage, of a plurality of sets of stops for controlling saidcarriage, a counterstop, said sets of stops being selectively movable tooperative or inoperative position with respect to said counterstop, eachstop being individually projectable, and keyoperated means forselectively projecting any individual stop of any set which is incoiiperative relation with the counterstop, said key-operated meansincluding a pivot pawl normally in position permitting free movement or"said sets of stops from, operative to inoperative position with respectto said counterstop, said pawl swinging on operation of its key toengage and set any stop which is in operative relation to thecounterstop.

4. In a tabnlating mechanism for a typewriting machine, the combinationwith a carriage, of a plurality of sets of stops for controlling saidcarriage, a key-operated stop-setting device, means being provided forrelative adjustment between said stopsetting device and the sets in saidplurality, to enable said stop-setting device to select and projectstops in any set, and means cooperable with the projected stops in anyset for arresting the carriage.

5. In a typewriting machine, the combination with a carriage, of a setof tabulator stops thereon, a stop-projecting device for selectivelyprojecting said stops. to operative position, a device for returning thestops to inoperative position, and a single key operable when moved fromits normal inactive position to an intermediate position, to opcrate thestop-projecting device, and when moved in the same direction beyond saidin- '7. In a typewriting machine, the combination with a carriage, of aset of tabulator stops mounted thereon, a stop-setting device, astop-returning device, a key operable when moved to one position toactuate thestop-setting device and when moved to another position toactuate the stop-returning device, and a latch governing the positionsto which the key is moved.

8. In a typewriting machine, the vcombination with a carriage, of a setof tabulator stops carried thereby, a device for selectively projectingsaid stops, a key operable when moved to an intermediate position toactuate said device, a latch normally in position to prevent theoperation of the key beyond said intermediate position, a.stop-returning de-. vice, and connections to said key for operatmg thestop-returning device when the latch is retracted and the key moved toits fullest extent.

9. In a typewriting machine, the combina tion with a carriage, oftabulator stops thereon, a spring pawl, a key, an actuator operated bythe keywhen the latter is depressed to an intermediateposition to swingsaid pawl and project a stop, and a resetting device for said stop movedby said actuator into operative positionwhen the key is fully depressed.I

10. In a typewriting machine, the combination with a carriage, of aplurality of stop-supporting devices mounted on the carriage, a set oftabulator stops carried by each of said supporting devices, astop-projecting pawl, said supports being individually movan intooperative relation to pawl, a

" key operable when moved to one position to actuate said pawl andthereby selectively project the stops of the support whlch is inoperative position, and a resetting device actuated by said key whenmoved to anotherposition.

11. Ina typewriting machine, the combination with a carriage, of a setof tabulator stops thereon, a stop-projecting device for selectivelyprojecting said stops to operative position, a device for returning thestops to inoperative position, a single key for operat ing both of saiddevices, and a latch to limit the movement of the key to a position inwhich the stop-projecting device only is operated, said latch releasableto permit the key to operate the stop-returning device.

12. In a typewriting machine, the combi nation with a carriage, of a setof tubulator stops thereon, a stop-setting device, a stopreturningdevice, a key operable when moved to an intermediate position to actuatethe stop-setting device and when moved beyond said position to actuatethe stop-returning device, and a latch to form a stop for the key whenthe latter is at said intermediate posltion, said latch being releasableto permit the key to actuate the stop-returning device. 13. Thecombination with a type-writing machine comprising a carriage, oftabulating mechanism comprising a plurality of stopsupporting barsextending in the directionof the carriage travel, a set of stops on eachof said bars, a counter-stop, said bars mov-.

able to brin said sets selectively into co-v operative V relation to thecounter-stop, a stop-setting pawl, said pawl and sets of stopsrelatively movable by the carriage travel to bring the Stops of a setsuccessively into position to be projected by the pawl, a key-operatedactuator for said pawl, said actuator operable when the key is moved toan intermediate position to actuate the pawl and thereby project a stopto operative position, a latch to prevent said key from being movedbeyond said intermedate position, means for releasing said latch andpermitting further movement of the key to a final position, and astop-restoring cam moved-to operative position by said actuator when thekey is moved to its final position, the pawl being released from saidactuator when the key is moved to its final position, whereby the stopsmay be restored by said restoring cam during the travel of the carriage.

14. In a typewriting machine, the combi- .for projecting said stops, akey, an actuator operable by said key when mowed to one positlon toactuate said pawl, the stops having projections which are successiyelybrought during the travel of the carriage into position to be engaged bysaid pawl whereby the stops may be selectively projected, and meansoperated by said actuator when said key is moved to another position, toreturn the stops, said pawl being freed from the con-' trol of saidactuator when the key is moved to stop-returning position.

16. In a typewriting machine, the combination with a carriage, of a setof tabulator stops, a support for said stops, a pawl mounted on themachine frame for projecting said stops, a stop-projecting key operativewhen moved to an intermediate posititon to actuate the pawl, and meansoperated bysaid key when the movement thereof is continued beyond saidintermediate position, to return the stops to inoperative position, saidpawl being taken out of the control of the key when the latter is movedbeyond said intermediate position.

17. In a typewriting machine, the combination with a carriage, of aplurality of stop supports mounted on the carriage, a

set of stops on each support, said supports being selectively movable tobring the stops thereon into operative position, a counterstop, a keyoperable when moved to one position to project the individual stops ofany set to cooperatewith the counter-stop when such set has been broughtby its support into said operative position, and a device operable bysaid key when the latter is moved to a dlfferent position, to restorethe stops to inoperative position on their support.

ALFRED G. F. KURGWSKL Witnesses: F. E. ALEXANDER, E. A. RENNm.

